The Graupner mc-28 HoTT is a sophisticated transmitter designed for advanced model enthusiasts. It caters to a wide range of models, including those used in functional modeling on land and water. With 16 control functions, 120 internal model memories, integrated telemetry and voice output, and the fast and secure bidirectional communication of Graupner’s HoTT 2.4 GHz technology, the mc-28 stands out as a true all-rounder.
The mc-28 features an internal circular polarized patch antenna for high range and reliability. Its digital and temperature-calibrated Hall sensor stick units ensure excellent durability, reliability, and precision. Two large, high-contrast displays provide constant information on telemetry data and parameters, allowing for quick and easy programming.
The transmitter’s switches and buttons can be freely assigned and customized. It offers 12 mixers and 8 switch phase programs with announcement functions, which can be adjusted and named for each model.
Thanks to the micro-SD card and micro USB interface, telemetry data and model memory can be imported and exported. Firmware updates are also easily performed.
Eight switch phase programs can be customized and named for each model, with separate programmable switch times. Functional modelers can use these phases to switch function groups. For example, in one phase of an excavator model, the joysticks control the driving functions, while in another phase, they control the functions of the superstructure.
Three ring limiters are available for Voith-Schneider or Schottel drives and similar systems. The ring limiter prevents oversteering of drives at certain stick positions, protecting the VSP from damage and ensuring a consistent propeller speed in the Schottel drive when used with a brushless motor.
Multi-Channel Function: The mc-28 includes two classic Multi-Switch or Multi-Prop decoders in the software, allowing for control of up to 16 additional functions or up to 8 extra servos. All available switches or controls can be used, with up to 4 additional switches possible using adapter cables for UVR switches 33000.16/-17. The multi-channels can be used with sound modules 2386.F and 2386.S, the light module 2381, the Nautic-Expert switch module 4159, 16-channel switch module 3972, and 4-channel proportional module 3973.
General Features
- Microcomputer Control System: Utilizing advanced 2.4 GHz Graupner HoTT technology.
- Circular Polarized Patch Antenna: For high range and reliability.
- Temperature-Calibrated Hall Sensor Sticks: In double ball-bearing aluminum stick units.
- Vibration Alarms: For various notifications.
- MicroUSB Charging: With LED charge indicator.
- Model Types Supported: Airplane, helicopter, multirotor, car, boat.
- Voice Output: Over 400 pre-recorded voice outputs and up to 40 user-defined ones.
- Up to 10 User-Defined Alerts: For warnings and notifications.
- 10 Different Vibration Alerts: For telemetry warnings, timers, RF signal, and voltage alarms.
- Retractable Channel Speed: For tow operation or multirotor with multiple transmitters and receivers.
- Music Player: Programmable start/stop via switch.
- Bidirectional Communication: Between transmitter and receiver.
- Wireless Teacher/Student Function: For training purposes.
- Multilingual Support: Languages include German, English, French, Italian, Spanish (additional languages via software update).
- Telemetry Data Storage: With date and time.
- Servo Cycle Times: Selectable for digital servos from 10ms.
- Ultra-Fast Response Times: Direct data transmission from the main processor to the 2.4 GHz transceiver.
- Programming and Operation: Based on proven mc-32 concepts.
- High-Contrast Display: Blue backlit graphics display for easy monitoring of model settings, memory, clocks, and battery voltage.
- 16 Control Functions: Fully customizable.
- 120 Model Memory: Expandable with micro-SD.
- Switches and Controls: Includes 10 switches/buttons, 2 three-position switches, 4 two-position switches, 2 long buttons, 2 rear buttons, 2 sliders, and 2 rotary encoders.
- Mode Selection: Modes 1 through 4 selectable.
- CAP-TOUCH Panels: With Key-Lock function to prevent accidental adjustments.
- Extensive Programming Functions: Directly accessible on the transmitter display.
- Customizable Voice Outputs: Via programmable switches.
- Advanced Programs for Fixed-Wing and Helicopter Models: Includes precise control for a range of functions.
- Swashplate Limiters: For helicopter control.
- Switch Monitor: To check all switch and control functions.
- 12 Programmable Mixers: For a variety of model types with adjustable input and output functions.
- 8 Switch Phase Programs: Customizable with separate switch times.
- SUPER-SERVO Menu: Comprehensive overview and adjustment for servo settings.
- SUPER-DUAL-RATE and EXPO Menu: 36 settings variants for servos and flight phases.
- Multi-Function Menus: For wing and helicopter models with automatic mixer settings.
- Helicopter Swashplate Mixers: For various configurations.
- Fail-Safe Monitor: For 16 servos.
- Clock Menu: Includes stopwatch system, alarm timer, countdown timer, lap counter, and more.
- History Stopwatch: Tracks power-on times and separate on/off switch times.
- Transmitter Operating Time Timer: Resets automatically with battery charging.
Maximum Safety
- Extremely High Range: Up to 3000 meters (downward or forward > 1000 meters).
- FHSS: Frequency hopping over up to 75 channels.
- Maximum Interference Immunity: Through optimized frequency hopping, wide channel spacing, and antenna diversification.
- Intelligent Data Transmission: With error correction.
- Range Test and Warning Function: For added safety.
- Low Voltage Warning: Alerts for low battery.
- Numerous Fail-Safe Functions: For reliable operation.
- Key-Lock Function: Prevents accidental menu changes.
Highest Precision
- Adjustable Response Times: As low as 10ms period time.
- Direct Processing: No delays from module processors.
- Synchronous Servo Movement: Control servo outputs in 4-block sections.
Unique Pilot Experience
- Minimal Delay Control Reactions: Through direct processing.
- Real-Time Telemetry Evaluation: For accurate monitoring.
- Optional Voice Output: For clocks, telemetry data, and warnings via headphone jack.
- Repeat and Continue Functions: For voice outputs via programmable switches.
- Adjustable Volume: For beeps and voice outputs.
- Integrated Telemetry Display: With 8 x 21 characters or 128 x 64 dots, in text or graphic form.
- Display Backlight Duration: Adjustable settings from 30 seconds to always on.
- Micro-SD Card Slot: For telemetry data storage and model memory expansion.
- PC Software: For telemetry data analysis or display via download.
- Summation Signal: Programmable at the highest receiver output for various functions.
- Model Memory Dependent Binding: Except for copied model memories.
- Wireless Teacher/Student Function: For easy training.
- Three Programmable Flight Phases: With swashplate limiters and engine off function.
- Numerous Fixed-Wing and Helicopter Mixers: For precise control.
Additional Features
- Easy and Fast Binding: For quick setup.
- Free Channel Mapping: Easy programming of all channels and servo settings.
- Binding of Multiple Receivers: Expands channels up to 16. The last bound receiver transmits telemetry data.
- Future-Proof: Updateable via PC interface.
Package Contents
- Graupner HoTT mc-28 Transmitter, 16-Channel with built-in 6000mAh LiPo battery
- Update Cable
- Micro-SD Card
- Aluminum Case
- Hand Rest Pads
- Transmitter Strap
- Short and Long Sticks
- Built-in Bluetooth® v2.1+ EDR Module
Technical Specifications
- Channels: 16
- Model Memory: 120
- Dimensions: Approximately 235 (315) x 228 x 80 mm
- Weight: 1250 g
- Frequency: 2400 - 2483.5 MHz
- Modulation: 2.4 GHz FHSS
- Range: Approximately 3000 m
- Current Consumption: 400 mA
- Operating Voltage: 3.4V to 4.2V
- Temperature Range: -15 to +55°C
